TY - JOUR
T1 - Application of high strength and ultra-high strength steel tubes in long hybrid compressive members
T2 - Experimental and numerical investigation
AU - Javidan, Fatemeh
AU - Heidarpour, Amin
AU - Zhao, Xiao-Ling
AU - Minkkinen, Jussi
PY - 2016/5/1
Y1 - 2016/5/1
N2 - With the increasing application of high strength steel material in industries, there is a high potentiality for taking advantage of the exceptional load-bearing capacities of this material in construction practice. In the present study, an innovative application for high and ultra-high strength steel material is proposed which enhances the overall behavior of structural elements. The high strength and ultra-high strength steel with nominal tensile strengths of 750 MPa and 1250 MPa, respectively, are proposed to be utilized as tube elements welded to corners of mild steel plates shaping an innovative hybrid section. This section takes advantage of the combined material properties of the two constituting elements in terms of strength, local buckling behavior and ductility. Large-scale tests and numerical analysis have been conducted to compare the behavior of the proposed sections against conventional welded sections. The effect of heat on the material properties of the hybrid section has also been considered. These effects are included in the finite element modeling of innovative columns where numerical outputs have been verified accordingly.
AB - With the increasing application of high strength steel material in industries, there is a high potentiality for taking advantage of the exceptional load-bearing capacities of this material in construction practice. In the present study, an innovative application for high and ultra-high strength steel material is proposed which enhances the overall behavior of structural elements. The high strength and ultra-high strength steel with nominal tensile strengths of 750 MPa and 1250 MPa, respectively, are proposed to be utilized as tube elements welded to corners of mild steel plates shaping an innovative hybrid section. This section takes advantage of the combined material properties of the two constituting elements in terms of strength, local buckling behavior and ductility. Large-scale tests and numerical analysis have been conducted to compare the behavior of the proposed sections against conventional welded sections. The effect of heat on the material properties of the hybrid section has also been considered. These effects are included in the finite element modeling of innovative columns where numerical outputs have been verified accordingly.
KW - Compressive behavior
KW - Finite element modeling
KW - High strength steel tubes
KW - Hybrid fabricated section
KW - Ultra-high strength steel tube
UR - http://www.scopus.com/inward/record.url?scp=84957801962&partnerID=8YFLogxK
U2 - 10.1016/j.tws.2016.02.002
DO - 10.1016/j.tws.2016.02.002
M3 - Article
AN - SCOPUS:84957801962
SN - 0263-8231
VL - 102
SP - 273
EP - 285
JO - Thin-Walled Structures
JF - Thin-Walled Structures
ER -